<template>
  <Dialog title="修改用户积分" v-model="dialogVisible" width="600">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="100px"
      v-loading="formLoading"
    >
      <el-form-item label="用户编号" prop="id">
        <el-input v-model="formData.id" class="!w-240px" disabled />
      </el-form-item>
      <el-form-item label="用户昵称" prop="nickname">
        <el-input v-model="formData.nickname" class="!w-240px" disabled />
      </el-form-item>
      <el-form-item label="变动前积分" prop="point">
        <el-input-number v-model="formData.point" class="!w-240px" disabled />
      </el-form-item>
      <el-form-item label="变动类型" prop="changeType">
        <el-radio-group v-model="formData.changeType">
          <el-radio :label="1">增加</el-radio>
          <el-radio :label="-1">减少</el-radio>
        </el-radio-group>
      </el-form-item>
      <el-form-item label="变动积分" prop="changePoint">
        <el-input-number v-model="formData.changePoint" class="!w-240px" :min="0" :precision="0" />
      </el-form-item>
      <el-form-item label="变动后积分">
        <el-input-number v-model="pointResult" class="!w-240px" disabled />
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script setup lang="ts">
import * as UserApi from '@/api/member/user';

/** 修改用户积分表单 */
defineOptions({ name: 'UpdatePointForm' });

const { t } = useI18n(); // 国际化
const message = useMessage(); // 消息弹窗

const dialogVisible = ref(false); // 弹窗的是否展示
const formLoading = ref(false); // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formData = ref({
  id: undefined,
  nickname: undefined,
  point: 0,
  changePoint: 0,
  changeType: 1
});
const formRules = reactive({
  changePoint: [{ required: true, message: '变动积分不能为空', trigger: 'blur' }]
});
const formRef = ref(); // 表单 Ref

/** 打开弹窗 */
const open = async (id?: number) => {
  dialogVisible.value = true;
  resetForm();
  // 修改时，设置数据
  if (id) {
    formLoading.value = true;
    try {
      formData.value = await UserApi.getUser(id);
      formData.value.changeType = 1; // 默认增加积分
      formData.value.changePoint = 0; // 变动积分默认0
    } finally {
      formLoading.value = false;
    }
  }
};
defineExpose({ open }); // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']); // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  if (!formRef) return;
  const valid = await formRef.value.validate();
  if (!valid) return;

  if (formData.value.changePoint < 1) {
    message.error('变动积分不能小于 1');
    return;
  }
  if (pointResult.value < 0) {
    message.error('变动后的积分不能小于 0');
    return;
  }

  // 提交请求
  formLoading.value = true;
  try {
    await UserApi.updateUserPoint({
      id: formData.value.id,
      point: formData.value.changePoint * formData.value.changeType
    });

    message.success(t('common.updateSuccess'));
    dialogVisible.value = false;
    // 发送操作成功的事件
    emit('success');
  } finally {
    formLoading.value = false;
  }
};

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    nickname: undefined,
    levelId: undefined,
    reason: undefined
  };
  formRef.value?.resetFields();
};

/** 变动后的积分 */
const pointResult = computed(
  () => formData.value.point + formData.value.changePoint * formData.value.changeType
);
</script>
